Can't Open Storyline Files with 2/26/19 Update

I just updated Articulate 360 and Storyline 360 on February 26, 2019. I updated to version 3.35.18088.0.

After updating, I am not able to open any Storyline file and instead receive this message: "This project is invalid or corrupt and cannot be opened. It may have been created in an earlier version of Storyline."

Is there a fix for this issue or is the solution to revert back to the last working version of Storyline 360? 

Thanks for the help!

Christy

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